A molecular geometry calculator is an online tool that helps in predicting the molecular geometry or shape of a molecule using the popular AXE method.
The molecular geometry calculator is also called the molecular shape calculator. This calculator is based on the AXE method. It should be noted that molecular geometry is different from electron geometry.
Molecular geometry calculator
How to calculate molecular geometry?
The molecular geometry can be calculated using a simple method that is AXE method.
AXE is a simple formula to represent the number of atoms bonded to the central atom in a molecule and the number of lone pairs present on the central atom.
After finding the number of lone pairs and bonded atoms attached to the central atom, use the VSEPR chart given below to calculate the molecular geometry or shape of a given molecule.
For instance –
If the number of lone pairs (E) on the central atom is 2, and the number of bonded atoms (X) attached to the central atom is 1, then the AXE formula becomes – AXE2, So, the molecular geometry or shape for AXE2 according to VSEPR chart will be Linear.
If the number of lone pairs (E) on the central atom is 2, and the number of bonded atoms (X) attached to the central atom is also 2, then the AXE formula becomes – AX2E2, So, the molecular geometry or shape for AX2E2 according to VSEPR chart will be Bent or V-shaped.
Look at the VSEPR chart given below with all the necessary data.
Bonded atoms (X)
Lone pairs (E)
Generic formula (AXE)
Molecular geometry or shape
2
0
AX2
Linear
1
1
AXE
Linear
3
0
AX3
Trigonal planar
2
1
AX2E1
Bent or V-shape
1
2
AXE2
Linear
4
0
AX4
Tetrahedral
3
1
AX3E
Trigonal pyramidal
2
2
AX2E2
Bent or V-shape
1
3
AXE3
Linear
5
0
AX5
Trigonal bipyramidal
4
1
AX4E1
Seesaw
3
2
AX3E2
T-shape
2
3
AX2E3
Linear
6
0
AX6
Octahedral
5
1
AX5E1
Square pyramidal
4
2
AX4E2
Square planar
Now, the question arises how will you find the number of lone pairs on the central atom of the molecule. For that, the best way to predict the number of lone pairs and bond pairs in the molecule is using a lewis structure.
A molecular geometry calculator is an online tool that helps in predicting the molecular geometry or shape of a molecule using the popular AXE method.
How do you calculate molecular geometry?
The molecular geometry can be calculated using a simple method that is AXE method. AXE is a simple formula to represent the number of atoms bonded to the central atom in a molecule and the number of lone pairs present on the central atom.
Vishal Goyal is the founder of Topblogtenz, a comprehensive resource for students seeking guidance and support in their chemistry studies. He holds a degree in B.Tech (Chemical Engineering) and has four years of experience as a chemistry tutor. The team at Topblogtenz includes experts like experienced researchers, professors, and educators, with the goal of making complex subjects like chemistry accessible and understandable for all. A passion for sharing knowledge and a love for chemistry and science drives the team behind the website. Let's connect through LinkedIn: https://www.linkedin.com/in/vishal-goyal-2926a122b/
Topblogtenz is a website dedicated to providing informative and engaging content related to the field of chemistry and science. We aim to make complex subjects, like chemistry, approachable and enjoyable for everyone.
